package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;

import jdk.jshell.spi.ExecutionControl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {


    @Autowired
    private MinioProperties properties;
    @Autowired
    private MinioClient client;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {


            //判断桶是否存在
            boolean bucketExists = client.bucketExists(BucketExistsArgs.builder().bucket(properties.getBucketName()).build());
            if (!bucketExists) {
                //若桶不存在,则创建桶
                client.makeBucket(MakeBucketArgs.builder().bucket(properties.getBucketName()).build());
                //设置桶的访问策略
                client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(properties.getBucketName()).config(createBucketPolicyConfig(properties.getBucketName())).build());
            }
            //解决文件重名的问题(在桶下多创建了一个目录，用来存储每天上传的文件)
            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
            client.putObject(PutObjectArgs.builder().
                    bucket(properties.getBucketName()).//设置要上传的桶
                    object(filename).//设置文件名
                    stream(file.getInputStream(), file.getSize(), -1).//流的格式上传
                    contentType(file.getContentType()).build());

            return String.join("/", properties.getEndpoint(), properties.getBucketName(), filename);


//        return null;
    }

    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }



//@Override
//public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, ExecutionControl.InternalException {
//
//    boolean bucketExists = minioClient.bucketExists(
//            BucketExistsArgs.builder()
//                    .bucket(properties.getBucketName())
//                    .build());
//    if (!bucketExists) {
//        minioClient.makeBucket(
//                MakeBucketArgs.builder()
//                        .bucket(properties.getBucketName())
//                        .build());
//        minioClient.setBucketPolicy(
//                SetBucketPolicyArgs.builder()
//                        .bucket(properties.getBucketName())
//                        .config(createBucketPolicyConfig(properties.getBucketName()))
//                        .build());
//    }
//    String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) +
//            "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
//    minioClient.putObject(
//            PutObjectArgs.builder()
//                    .bucket(properties.getBucketName())
//                    .stream(file.getInputStream(), file.getSize(), -1)
//                    .object(filename)
//                    .contentType(file.getContentType())
//                    .build());
//
//    return String.join("/",properties.getEndpoint(),properties.getBucketName(),filename);
//}

}
